Just about drinking anything else (apart from alcohol) would be better than pop as it has such a horrendous sugar content. Watch it if you switch to the sugar free options as too much can make you ill or give you diarrhea. Have you tried herbal teas in the evening? Camomile is suggested for helping aid sleep. Presonally I think they all taste revolting but I don't like pop either so you might like some of them.
Milk, especially warm milk, is also nice before bed. Choose the low fat option.
Try adding just a small amount of fruit juice to the water to get a bit of flavour.
If you still find yourself comfort eating, try changing what you eat when you do it. Easier said than done but when you start to feel healthier you know it was worth it! :bounce: